For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningDaytime Running Lamps (DRL)
Daytime Running Lamps can make it easier for others to see the front of your
vehicle during the day. Fully functional daytime running lamps are required on all
vehicles first sold in Canada.
A light sensor on top of the instrument panel makes the DRL work, so be sure
it is not covered.
The D ...
Child Seat Restraint System
Warning: A child in a rear-facing child restraint can be seriously
injured if the right-front passengers air bag inflates. This is because the
back of a rear-facing child restraint would be very close to the inflating air
bag. NEVER use a rear-facing child restraint in this vehicle. If a
forwa ...
Park Brake and P (Park) Mechanism Check
WARNING
When you are doing this check, the vehicle could begin to move.
You or others could be injured and property could be damaged.
Make sure there is room in front of the vehicle in case it begins to roll. Be
ready to apply the regular brake at once should the vehicle begin to move.
Park on ...